Well, I guess if they way I said it make too hard to understand, i'll try to simplify it.
In essence, How can I add/enable tunl0 interface for ipip support on pfsense ( as it's a FreeBSD system and I
have no knowledge of it. though I know it's UNIX-like OS ).
for example : i could not just add this "ifconfig tun0 create" on pfsense console terminal, can I ?
WebGUI doesn't really help in solving what I want.
Thanks,